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A Study of the Behavior of Underground Openings During Block Caving Operations.

Authors

Barla-GB; Boshkov-SH

Source

For Reference Only At Bureau Libraries :400 pages

Link

NIOSHTIC No.

10002142

Abstract

This report describes studies of the influence of block-caving operations on underground openings, and attempts to correlate observed behavior with mathematical models developed to explain this behavior. The studies proceeded by obtaining in situ stress measurements and attempting to relate the measured stress to field conditions by finite element modeling. A principal objective was to develop the capability to predict ground movement based upon stress measurement and an appropriate model; however, predictive capability is strongly influenced by the proper choice of rock strength properties used in the model. Some conclusions in the report, particularly those relating to stress distributions in supports, are potentially useful to mine designers. For example, a delay in support installation and better control of undercutting could be beneficial during mining by the block-caving method.